"Dildos and all of those other sex toys have been used for thousands of years in demonic sex rituals," he wrote. "It's one of the main ways ancient pagan societies worshiped their demonic gods."

Major added: "There is nothing normal about it. And shame on any Christian that says so."

The Facebook post linked to a blog entry on the topic on the Eden Decoded website which warned that Satan used sex to "empower demonic entities."

He wrote:

"Many of you who are reading this have sex toys in your possession right now. And whether you want to accept it as fact or not: those sex toys are an open portal between the demonic realm and your own life. As long as you have those sex toys in your home, you have a doorway that can allow demons to not only access your life at will, but also to torment you, hinder and destroy certain parts of your life as it relates to sex and your relationships."

The post was an excerpt from Major's book, Diva, Goddess, Queen: Breaking The Power Of Soul Ties, Lust And Sexual Demons.

Sex in general, and masturbation in particular, were popular topics on the Eden Decoded website. Another post, an excerpt from a book called Hedonism: Destroying Demonic Sexual Strongholds, warned:

"There are such things as sex demons. And the danger in masturbating is that one could inadvertently summon a sex demon to attach itself to you through the act of masturbating. And once that demon attaches, it is difficult to get it to leave. It will drive you to masturbate, even when you don't want to. You'll be hit with urges to play with yourself so powerful that only an orgasm will allow you some temporary relief."

Major also wrote that a sex demon may attract "other unclean spirits," which would "also attach to your life."

There is no scientific evidence of "demons" attaching themselves to people who masturbate. On the contrary, medical experts believe masturbation is healthy, if not important, for both men and woman.